Scale: Unknown. Model of a Porter's patent anchor (circa 1846). The model is made entirely in brass or bronze. The plating is tarnished and worn in places. The shank is rectangular in section through which is a single piece crescent-shaped arm which pivots on a large fidded bolt, held in place by a pin and chain. The upward facing palms are flat and teardrop-shaped and include a small barb on the underside of the arm at its widest point. The stock is circular in section, tapering towards its ends, finishing with a flat button shape at one end and a flat button shape at the other which is bent 90 degrees parallel to the shank It was originally fidded (now missing), allowing it to be un-shipped and stowed flat aboard ship. At the top of the shank is a swivelling bow shackle held in place by a pin. The inscription "Porters & Co Patent" has been stamped on the arms while just behind the crown is stamped "No 21". Inscribed on the shank in white ink is the RUSI catalogue number "1894".